Bestimmung Kleinster Radium-226 Konzentrationen im Wasser |
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| Authors: | A Wicke J Porstendörfer |
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| Institution: | 1. Strahlenzentrum der Justus-Liebig-Universit?t Giessen, Leihgesterner Weg 217, D-6300, Giessen, (BRD)
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| Abstract: | A sensitive technique is described, which permits, without chemical treatment, detection of radium (226Ra) in water in concentrations as low as 0.01 pCi·1−1. The determination is based on the emanation of radium daughter radon (222Rn) after it has achieved the radioactive equilibrium; it is then counted in a scintillation chamber. This procedure was applied
to water samples from public water supplies in Hessia, Germany, for routine measurements. The radium concentration of 205
samples show log-normal distribution with a mean value of 0.11 pCi·1−1 and a geometric standard deviation of 2.6. Significantly higher results, between 0.12 and 14.6 pCi·1−1, were obtained for several samples of commercially available mineral water.
Herrn Prof. Dr. A. SCHRAUB zum 70. Geburtstag gewidmet. |
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